Title
- Chronicles1
- Chōsen hachidō no zu1
- Collectarium1
- Collection of Arabic supplications and magical texts1
- Collection of rare texts on geomancy1
- Commentary on Aristotle's Physics1
- Commentary on Decretals of Gregory IX1
- Commentary on Lāmīyat al-afʻāl1
- Commentary on Mashāriq al-anwār1
- Commentary on Ptolemy1
- Commentary on Summa theologica1
- Commentary on the Ephemerides1
- Commonplace book1
- Confutatio libelli Philippi Melanchtonis cuius titulus est De officio principum1
- Consolatio peccatorum1
- Consolation of Philosophy1
- Constitutio criminalis Carolina1
- Contract1
- Copy book1
- Correspondence1